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Evaluation of DES for Flows around UCAVs

机译：评估UCAV周围流动的DES

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This paper demonstrates the Detached-Eddy Simulation approach for the computationrnof flows around uninhabited combat air vehicles. This new family of aircraftrnmay feature weapon bays to enhance stealth characteristics and improve aerodynamicrnperformance. However, during operation with the bay open, a highly energeticrnflow-field develops that influences the aerodynamics of the aircraft. For thisrnreason, detailed CFD analyses are necessary to provide the loads encountered whenrnweapon bays are exposed. In contrast to previous studies where idealised, isolatedrncavities are used as model problems, a realistic aircraft geometry is used in thisrnwork. The results show noise levels as high as 170 dB and a very unsteady flow.rnThe pressure drag of the vehicle was also increased by 360% when the cavity wasrnexposed.
机译：本文演示了用于计算无人战斗机周围流动的离散涡模拟方法。这个新的飞机家族可能具有武器舱，以增强隐身特性并改善空气动力学性能。但是，在机舱打开的情况下，会产生高能流场，从而影响飞机的空气动力学。对于这种原因，有必要进行详细的CFD分析以提供武器舱暴露时遇到的载荷。与以前的研究（理想化的隔离型腔用作模型问题）相反，本文采用了真实的飞机几何形状。结果表明，噪声水平高达170 dB，并且流动非常不稳定。暴露空腔时，车辆的压力阻力也增加了360％。

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